private const string blankTarget = "_blank";
private const string selfTarget = "_self";
 
/// <summary>
/// Open html page specified by Uri in specified target.
/// </summary>
/// <param name="uri"></param>
/// <param name="target">"_blank", "_self", "_top", "_parent", window or frame name.</param>
private static void openHtmlPage(Uri uri, string target) {
        if (String.Equals(target, selfTarget)) {